ref: 0aae832ac3f3ae5d136563e980e9c32ceb0d1444
dir: /sys/src/libc/amd64/main9p.s/
TEXT _mainp(SB), 1, $0 MOVQ AX, _tos(SB) MOVQ $_profmain(SB), RARG PUSHQ RARG PUSHQ $0 JMPF _callmain(SB) MOVQ $_profin(SB), AX /* force loading of profile */ TEXT _savearg(SB), 1, $0 MOVQ RARG, AX RET TEXT _saveret(SB), 1, $0 RET /* we want RARG in RARG */ TEXT _callpc(SB), 1, $0 MOVQ 8(RARG), AX RET